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annotate mercurial/exchange.py @ 20350:8c85d968ee65

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push: move `revs` argument into the push object One more step toward a more modular push function.
author Pierre-Yves David <pierre-yves.david@logilab.fr>
date Thu, 30 Jan 2014 17:04:23 -0800
parents 89f90457979e
children c05ad450df23
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1 # exchange.py - utily to exchange data between repo.
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2 #
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from i18n import _
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9 from node import hex
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10 import errno
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11 import util, scmutil, changegroup
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12 import discovery, phases, obsolete, bookmarks
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13
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14
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15 class pushoperation(object):
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16 """A object that represent a single push operation
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17
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18 It purpose is to carry push related state and very common operation.
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19
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20 A new should be created at the begining of each push and discarded
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21 afterward.
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22 """
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23
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24 def __init__(self, repo, remote, force=False, revs=None):
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25 # repo we push from
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26 self.repo = repo
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27 self.ui = repo.ui
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28 # repo we push to
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29 self.remote = remote
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30 # force option provided
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31 self.force = force
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32 # revs to be pushed (None is "all")
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33 self.revs = revs
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34
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35 def push(repo, remote, force=False, revs=None, newbranch=False):
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36 '''Push outgoing changesets (limited by revs) from a local
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37 repository to remote. Return an integer:
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38 - None means nothing to push
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39 - 0 means HTTP error
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40 - 1 means we pushed and remote head count is unchanged *or*
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41 we have outgoing changesets but refused to push
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42 - other values as described by addchangegroup()
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43 '''
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44 pushop = pushoperation(repo, remote, force, revs)
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45 if pushop.remote.local():
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46 missing = (set(pushop.repo.requirements)
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47 - pushop.remote.local().supported)
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48 if missing:
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49 msg = _("required features are not"
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50 " supported in the destination:"
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51 " %s") % (', '.join(sorted(missing)))
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52 raise util.Abort(msg)
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53
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54 # there are two ways to push to remote repo:
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55 #
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56 # addchangegroup assumes local user can lock remote
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57 # repo (local filesystem, old ssh servers).
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58 #
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59 # unbundle assumes local user cannot lock remote repo (new ssh
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60 # servers, http servers).
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61
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62 if not pushop.remote.canpush():
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63 raise util.Abort(_("destination does not support push"))
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64 unfi = pushop.repo.unfiltered()
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65 def localphasemove(nodes, phase=phases.public):
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66 """move <nodes> to <phase> in the local source repo"""
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67 if locallock is not None:
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68 phases.advanceboundary(pushop.repo, phase, nodes)
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69 else:
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70 # repo is not locked, do not change any phases!
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71 # Informs the user that phases should have been moved when
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72 # applicable.
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73 actualmoves = [n for n in nodes if phase < pushop.repo[n].phase()]
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74 phasestr = phases.phasenames[phase]
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75 if actualmoves:
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76 pushop.ui.status(_('cannot lock source repo, skipping '
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77 'local %s phase update\n') % phasestr)
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78 # get local lock as we might write phase data
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79 locallock = None
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80 try:
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81 locallock = pushop.repo.lock()
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82 except IOError, err:
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83 if err.errno != errno.EACCES:
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84 raise
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85 # source repo cannot be locked.
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86 # We do not abort the push, but just disable the local phase
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87 # synchronisation.
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88 msg = 'cannot lock source repository: %s\n' % err
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89 pushop.ui.debug(msg)
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90 try:
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91 pushop.repo.checkpush(pushop.force, pushop.revs)
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92 lock = None
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93 unbundle = pushop.remote.capable('unbundle')
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94 if not unbundle:
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95 lock = pushop.remote.lock()
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96 try:
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97 # discovery
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98 fci = discovery.findcommonincoming
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99 commoninc = fci(unfi, pushop.remote, force=pushop.force)
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100 common, inc, remoteheads = commoninc
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101 fco = discovery.findcommonoutgoing
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102 outgoing = fco(unfi, pushop.remote, onlyheads=pushop.revs,
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103 commoninc=commoninc, force=pushop.force)
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104
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105
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106 if not outgoing.missing:
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107 # nothing to push
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108 scmutil.nochangesfound(unfi.ui, unfi, outgoing.excluded)
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109 ret = None
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110 else:
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111 # something to push
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112 if not pushop.force:
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113 # if repo.obsstore == False --> no obsolete
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114 # then, save the iteration
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115 if unfi.obsstore:
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116 # this message are here for 80 char limit reason
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117 mso = _("push includes obsolete changeset: %s!")
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118 mst = "push includes %s changeset: %s!"
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119 # plain versions for i18n tool to detect them
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120 _("push includes unstable changeset: %s!")
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121 _("push includes bumped changeset: %s!")
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122 _("push includes divergent changeset: %s!")
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123 # If we are to push if there is at least one
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124 # obsolete or unstable changeset in missing, at
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125 # least one of the missinghead will be obsolete or
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126 # unstable. So checking heads only is ok
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127 for node in outgoing.missingheads:
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128 ctx = unfi[node]
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129 if ctx.obsolete():
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130 raise util.Abort(mso % ctx)
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131 elif ctx.troubled():
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132 raise util.Abort(_(mst)
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133 % (ctx.troubles()[0],
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134 ctx))
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135 newbm = pushop.ui.configlist('bookmarks', 'pushing')
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136 discovery.checkheads(unfi, pushop.remote, outgoing,
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137 remoteheads, newbranch,
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138 bool(inc), newbm)
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139
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140 # TODO: get bundlecaps from remote
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141 bundlecaps = None
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142 # create a changegroup from local
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143 if pushop.revs is None and not (outgoing.excluded
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144 or pushop.repo.changelog.filteredrevs):
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145 # push everything,
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146 # use the fast path, no race possible on push
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147 bundler = changegroup.bundle10(pushop.repo, bundlecaps)
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148 cg = pushop.repo._changegroupsubset(outgoing,
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149 bundler,
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150 'push',
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151 fastpath=True)
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152 else:
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153 cg = pushop.repo.getlocalbundle('push', outgoing,
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154 bundlecaps)
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155
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156 # apply changegroup to remote
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157 if unbundle:
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158 # local repo finds heads on server, finds out what
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159 # revs it must push. once revs transferred, if server
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160 # finds it has different heads (someone else won
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161 # commit/push race), server aborts.
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162 if pushop.force:
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163 remoteheads = ['force']
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164 # ssh: return remote's addchangegroup()
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165 # http: return remote's addchangegroup() or 0 for error
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166 ret = pushop.remote.unbundle(cg, remoteheads, 'push')
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167 else:
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168 # we return an integer indicating remote head count
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169 # change
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170 ret = pushop.remote.addchangegroup(cg, 'push',
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171 pushop.repo.url())
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172
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173 if ret:
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174 # push succeed, synchronize target of the push
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175 cheads = outgoing.missingheads
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176 elif pushop.revs is None:
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177 # All out push fails. synchronize all common
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178 cheads = outgoing.commonheads
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179 else:
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180 # I want cheads = heads(::missingheads and ::commonheads)
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181 # (missingheads is revs with secret changeset filtered out)
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182 #
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183 # This can be expressed as:
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184 # cheads = ( (missingheads and ::commonheads)
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185 # + (commonheads and ::missingheads))"
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186 # )
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187 #
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188 # while trying to push we already computed the following:
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189 # common = (::commonheads)
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190 # missing = ((commonheads::missingheads) - commonheads)
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191 #
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192 # We can pick:
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193 # * missingheads part of common (::commonheads)
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194 common = set(outgoing.common)
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195 nm = pushop.repo.changelog.nodemap
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196 cheads = [node for node in pushop.revs if nm[node] in common]
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197 # and
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198 # * commonheads parents on missing
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199 revset = unfi.set('%ln and parents(roots(%ln))',
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200 outgoing.commonheads,
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201 outgoing.missing)
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202 cheads.extend(c.node() for c in revset)
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203 # even when we don't push, exchanging phase data is useful
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204 remotephases = pushop.remote.listkeys('phases')
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205 if (pushop.ui.configbool('ui', '_usedassubrepo', False)
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206 and remotephases # server supports phases
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207 and ret is None # nothing was pushed
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208 and remotephases.get('publishing', False)):
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209 # When:
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210 # - this is a subrepo push
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211 # - and remote support phase
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212 # - and no changeset was pushed
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213 # - and remote is publishing
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214 # We may be in issue 3871 case!
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215 # We drop the possible phase synchronisation done by
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216 # courtesy to publish changesets possibly locally draft
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217 # on the remote.
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218 remotephases = {'publishing': 'True'}
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219 if not remotephases: # old server or public only repo
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220 localphasemove(cheads)
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221 # don't push any phase data as there is nothing to push
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222 else:
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223 ana = phases.analyzeremotephases(pushop.repo, cheads,
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224 remotephases)
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225 pheads, droots = ana
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226 ### Apply remote phase on local
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227 if remotephases.get('publishing', False):
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228 localphasemove(cheads)
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229 else: # publish = False
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230 localphasemove(pheads)
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231 localphasemove(cheads, phases.draft)
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232 ### Apply local phase on remote
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233
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234 # Get the list of all revs draft on remote by public here.
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235 # XXX Beware that revset break if droots is not strictly
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236 # XXX root we may want to ensure it is but it is costly
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237 outdated = unfi.set('heads((%ln::%ln) and public())',
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238 droots, cheads)
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239 for newremotehead in outdated:
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240 r = pushop.remote.pushkey('phases',
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241 newremotehead.hex(),
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242 str(phases.draft),
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243 str(phases.public))
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244 if not r:
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245 pushop.ui.warn(_('updating %s to public failed!\n')
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246 % newremotehead)
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247 pushop.ui.debug('try to push obsolete markers to remote\n')
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248 obsolete.syncpush(pushop.repo, pushop.remote)
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249 finally:
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250 if lock is not None:
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251 lock.release()
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252 finally:
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253 if locallock is not None:
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254 locallock.release()
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents:
diff changeset
255
20350
8c85d968ee65 push: move `revs` argument into the push object
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 20349
diff changeset
256 bookmarks.updateremote(pushop.ui, unfi, pushop.remote, pushop.revs)
20345
8567b4ea76ac exchange: extract push function from localrepo
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents:
diff changeset
257 return ret